IDEA-320485 Accessibility: Fix announcing notification at the start of the IDE

The problem is in the caller: we find a label, give it to the native, but native doesn't have a native accessible context yet, because the initialization is lazy and VoiceOver hasn't been requested it.
Now we take IdeRootPane as a caller.

GitOrigin-RevId: de04373d3098fa434efbc4bab746eb8b878f861c

platform/platform-api/resources/messages/UIBundle.properties

@@ -319,4 +319,5 @@ stripe.right.accessible.group.name=Right Stripe
 toolbar.group.default.accessible.group.name=Toolbar
 toolbar.group.right.accessible.group.name=Right Toolbar
 toolbar.group.left.accessible.group.name=Left Toolbar
+root.pane.accessible.group.name=Root Pane
 light.bulb.panel.accessible.name=Light Bulb

platform/platform-impl/src/com/intellij/notification/impl/NotificationsAnnouncer.kt

@@ -10,6 +10,7 @@ import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.util.text.StringUtil
 import com.intellij.openapi.wm.WindowManager
+import com.intellij.openapi.wm.impl.IdeRootPane
 import com.intellij.util.ui.EDT
 import com.intellij.util.ui.UIUtil
 import com.intellij.util.ui.accessibility.AccessibleAnnouncerUtil
@@ -59,6 +60,8 @@ object NotificationsAnnouncer {
   }
 
   private fun findCaller(frame: JFrame): Accessible? {
+    (frame.rootPane as? IdeRootPane)?.let { return it }
+
     var caller = callersCache.firstOrNull { it.isValid && it.frame === frame }?.accessible
     if (caller == null){
       callersCache.removeAll { !it.isValid }
@@ -76,7 +79,8 @@ object NotificationsAnnouncer {
 
   private fun announceComponents(components: List<String>, caller: Accessible, mode: Int) {
     val text = StringUtil.join(components, ". ")
-    if (LOG.isDebugEnabled) LOG.debug("Notification will be announced with mode=$mode, from caller=$caller, text=$text")
+    if (LOG.isDebugEnabled)
+      LOG.info("Notification will be announced with mode=$mode, from caller=$caller, text=$text")
 
     AccessibleAnnouncerUtil.announce(caller, text, mode != 1)
   }
@@ -119,6 +123,6 @@ object NotificationsAnnouncer {
     val frame: JFrame? get() = frameWeak.get()
     val accessible: Accessible? get() = accessibleWeak.get()
     val isValid: Boolean get() = frame != null &&
-                                 accessible?.let { it is JComponent && it.isVisible } == true
+                                 accessible?.let { it is JComponent && it.isVisible && it.isValid } == true
   }
 }

platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeRootPane.kt

@@ -53,6 +53,8 @@ import com.jetbrains.JBR
 import org.jetbrains.annotations.ApiStatus
 import java.awt.*
 import java.awt.event.MouseMotionAdapter
+import javax.accessibility.AccessibleContext
+import javax.accessibility.AccessibleRole
 import javax.swing.*
 
 private const val EXTENSION_KEY = "extensionKey"
@@ -260,6 +262,25 @@ open class IdeRootPane internal constructor(frame: JFrame,
     return toolWindowPane!!
   }
 
+  override fun getAccessibleContext(): AccessibleContext {
+    return if (SystemInfo.isMac) {
+      if (accessibleContext == null) {
+        // We need to turn IdeRootPane into an accessible group in order to make notifications announcing working
+        accessibleContext = object : AccessibleJRootPane() {
+          override fun getAccessibleRole(): AccessibleRole {
+            return AccessibleRole.GROUP_BOX
+          }
+
+          override fun getAccessibleName(): String {
+            return UIBundle.message("root.pane.accessible.group.name")
+          }
+        }
+      }
+      accessibleContext
+    }
+    else super.getAccessibleContext()
+  }
+
   open fun getToolWindowPane(): ToolWindowPane = toolWindowPane!!
 
   private fun updateScreenState(isInFullScreen: () -> Boolean) {